What Is A UK Registration Number?

A company registration number – often abbreviated as ‘CRN’ – is a unique number that is issued to a limited company or Limited Liability Partnership (LLP) upon incorporation with Companies House. Your CRN will consist of 8 numbers, or 2 letters followed by 6 numbers. Your company registration number will be displayed on your certificate of incorporation and any statutory company mail sent from Companies House. It will also appear on the public register next to your company details.

You cannot choose or change your CRN – it will be computer generated on a sequential basis depending on your country of incorporation and the type of limited company you register: